Mounting for power tool



Jan. 30, 1940. 1-. HEDGPETH MOUNTING FOR POWER TOOL Filed May 10, 1939 3 Sheets$heet 1 J26 dang v/Q. @pei M Jan. 30, 1940. T. L. HEDGPETH MOUNTING FOR POWER TOOL Filed May 10, 1939 3 Sheets-Sheet 2 Jzkflezai 01? @J 15 60 e? l2 ea'J a 6 .4 H j J M M X 7 0 fifig !L-\ w M i! I ll M I J a w W T W! H i Jan. 30, 1940.

MOUNTING FOR POWER TOOL Fi led May 10, 1939 s Sheets-Sheet 3 T. L. HEDGPETH 2,188,595

Patented Jan. 30, 1940 *UNITED STATES PATENT O'FFlCE MOUNTING ronrowna root {v I Theron L. Hedgpeth, Oak Park, 'Ill.,--assignor to I r Duro Metal-Products Company; Chicago, 111., acorporation of Illinois Application May 10, 1939",Serial No.1272, 815

Claims. (01. 243-124 This invention relates to a 'mounting for power tools and has for its principal object to provide an improved mounting whereby power hand tools may be readily mounted in various positions and 5 for various purposes so'as toconvertthem, in effect,-into machine tools. The invention will be particularly described in connection with the power hand tool described and claimed in'my copending application Serial No. 258,667 filed February 27, 1939. It will, however, be readily understood that the invention is applicable generally to other power hand tools of the same general type. I

The invention will readily be understood'from the following'description of a preferred embodiment thereof, taken inconju'nction with the ac-' companying drawings, in which:

Figure 1 is a sectional elevation of a mounting for a power hand'tool, whereby the same may be adapted for use as a shaper;

side of Fig. 5, and

- Fig. '7 is a further elevation as viewedffrom the right in'Fig. 5.

' Referring to the drawings, the hand tool referred'to comprises a housing. !0 of generally pear-shape outline, as indicated 'i'n"'dash-anddot lines inFigs. 1, 2 and 5. The principal por-' tion of the housing I0 is," as shown'in, 3,"substa'ntially cylindrical in form, but is provided with two opposed generally flat"sides'll. These flat sides are provided with longitudinal, flutings or corrugations, as best seen in Figs. 3 and '7.

The tool comprises a switch 12, a cable l3 whereby its motor may be energized, and a chuck M which rotates with the rotor of themotor and which is adapted to receive the spindles of cut ting tools, bores or abrasive elements indicated generally by the reference numeral l5.

-My improved mounting comprises a pedestal I6 which may, as best shown in Fig. 1, be ahollow casting which has a large base portion l 1 adapted to reston a bench. At a position near its center.

the casting is providedwith a boss l8vfor the Fig. 6 is an elevation as viewed from the upper,

pedestal l6 extends upwardly ingeneral conical form,.the upper portion being a solid head 20. The head '20 of the pedestal is provided with a transverse bore 2| which-receives a pivot pin 22.

This pivot pin isheld stationary within the bore 5 by'means of a set screw 23. The head 20 is also provided with a transverse slot 24, the plane of which lies at right angles to the direction of the n I pivot pin 22.

As best seen in Figgl, the pivot pin 22 extends l0 across the slot 24. The slot 24 receives one length of an angle'member 25, this length having an opening 26 through which the pivot pin 22 passes.- It will readily be understood that the pin 22 serves as 'a pivot for the angle member so that 15 the other outer length of the angle member 25, Whichis indicated by the reference numeral 21, may .be located at variouspositions with respect to the pedestal. l6 While still maintaining its general horizontal position. 20 The angle member25 may be secured in any desired positionof adjustment by means of the thumb screw 28; Upon the lengthZl of the angle member 25 is rigidly mounted a bolt 29 which is directed outwardly away from th'e pivot pin 22 and is locatedatright angles to the axis of the pivot pin. h Thefbolt 29 is parallel to the axis of the'length of the angle member 25which is receivedin theslot 24.

i My improved mounting ring designated generally by the reference number 30. This mounting ring comprises afmajor annular portion 3| which is adapted to receive the bodyof the tool, as shown in thev drawings. .On one side the annular portion 3|.has' i mounted within 'it a bearing plate 32. This bearing plate provides a central recessed portion 33 and upperand lower portions 34 which are of corrug-ated'form and'are adapted .to engage the'flat sides ll of the tool, which flat sides are provided 40 with similar longitudinal fiutings or corrugations,

as best seen in-Figs. 3 and 7.

On the opposite side of the annular member 3| is provided a movable abutment plate, 31 which is substantially similar to the plate 32, with the exception that it is rigidly mounted on a screw 38 and'that it is capable of moving in the radial direction 'of the annular member 3|.

tool mounting also includes a I washer 43 which is adapted to abut against the nut 42 and against the outer side of the loop 4| The nut 42 is provided with a series of radial openings 44 adapted to receive a capstan bar for applying leverage to-the nut for securing the tool I 0 firmly in its mounting.

It may be noted that on the outer side of the abutment plate 31 the annular member 3| is recessed slightly to permit the abutment plate-31 to be moved clear of the tool 0, as indicated at 45.

To mount the tool ill in the annular member 3|, the nut 42 is rotated in the left-hand direction so as to draw the plate 31 into the recess45. The tool is then placed in position with the corrugated sides opposite the abutment plates and 31. The nut 42 is then rotated in the clockwise direction so as to project the plate 31 inwardly until it engages the adjacent side I I. It may here be noted that the plate 31 is prevented from rotating by its relation with the annular member 3|. The projection of the abutment plate 3'! forces the remote side into engage ment with the abutment plate 32.

The abutment plate being stationary, defines the exact direction of the axis of the tool. The

plate 31 being capable of a limited rotation about the axis of the screw 38, locates itself owing to the engagement of its corrugations with the corrugations of the adjacent side l of the tool. The nut 42 is tightened by means of a capstan bar which isv entered into' certain of the openings 44 and when the tool is finally mounted in position,

the nut 42 bears strongly against the washer 43 which bears against the outer side of the loop 4|.

The annular member 3| is provided on one side with a lug 46 which is provided with an opening 4? having an axis parallel to the axis of the annular member 3|. The opening 41' is adapted to receive the bolt 29 and the mounting ring 30 may be rigidly secured to the angle member 25 by means of. a nut 48 and washer 49.

It will thus be seen that the tool II] has, in effect, a universal mounting upon the head 20 of the pedestal. Owing to the pivotal mounting of the tool upon the pedestal about the axes of, the pivot 22 and the bolt 29, the tool may be directed in practically any desired direction. Thus, as shown in Figs. 1, 2 and 3, the tool is directed upwardly. By simply loosening the thumb screw 28 and swinging the tool about the pivot pin 22, the

5 tool Himay be moved into the horizontal position shown in Figs. 5, 6, and 7.

By adjusting the tool l-fl around the bolt 29- as axis, the location of the tool It) with relation to the pedestal i6 may be changed without changing its direction. This enables the tool H], as shown in Fig. l, to be swung around the pedestal to more convenient locations while still preserving its vertical direction. When the tool is in horizontal position, as shown in Figs. 5, 6 and 7, it may be swung around the bolt 29 in order to locate the tool at a certain height.

It will, of course, be understood that other accessories may be readily applied to the tool and of the bolt 29. The post 50 is provided with a shoulder 5| and beyond this shoulder it comprises a round bar-like portion 52. The bar-like portion 52 is adapted to extend through a boss 53 on an attachment such as a shaper table 54.

The shaper table may be held stationary by means of a thumb screw 55 mounted in the boss 53 and adapted to engage the post 52. The shaper table 54 is provided'with an opening 55' through which may extend the cutting tool or bit l5 and the spindle which carries it. The shaper table 54 may be provided with adjustable guides 56-and 51 of desired type,

Althoughthe invention has been disclosed in conection with the specific details of a preferred embodiment thereof, it must be understood that such details are not intended to be limitative of the invention except in so far as set forth in the accompanying claims. 1

.Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A mounting for a power tool comprising a pedestal having an upwardly projecting end portion,an angle member mounted on said end portionior movement about ahorizontal axis, means on said angle member defining-anaxis at right angles to the first said axis and'in displaced relation to said endportion, a mounting ring adapted to be secured to last said means in desired relation thereto, and means for securing said angle member in desired position of adjustment about the first said axis.

2. A mounting for a power tool-comprising a pedestal having a vertical slot in its upper end, a

angle,- member'in displaced relation to said upper end of the pedestal and at right angles to said the pivot pin, a mounting ring for a power tool having a perforated lug whereby the ring may be mounted on said bolt in pivotal relation thereto,

and means for securing said ring rigidly. to bolt., I

3 A mounting for a power tool comprising a pedestal having a vertical slot in its upper end, a horizontal pivot pin-insaid pedestal extending across. said slot, an angle memberhaving one length received in said slot, said length being provided with an opening through which the pivot pin extends, set screw means on said pedestal for holding said'anglemember rigidly thereon, a bolt rigidly mounted on the other length of said angle member, said bolt being at right angles to the pivot pin, a mounting ring for a power tool hav-- ing a perforated lug whereby the ring may be mounted on said bolt in. pivotal relation thereto, means forsecuring said ring rigidly to said bolt, said mounting ring having a stationary abutment plate on its interior and a movable abutsaid ment plate in opposed relation, a threaded member projecting radially through the ring and carrying said movable plate, a loop member integral with said ring and located on the exterior side thereof, .said threaded member extending through said loop member, and nut means on said threaded member and within said loop member adapted to efiect the inward movement of the movable abutment plate to clamp the tool in the ring.

4. In a mounting for a power tool, a mounting ring having a perforated lug on its exterior, a stationary abutment plate on its interior and a movable abutment plate in opposed relation, a threaded member rigidly mounted on said movable plateand projecting outwardly through the ring, a loop member integral with the ring and on the exterior side thereof, said threadedmember extending through the loop member, and. a nut member mounted on said threaded member, located within the loop member and adapted to effeet the inward and outward movement of the movable abutment plate.

5. In a mounting for a power tool, a mounting ring having a perforated lug on its exterior, astationary abutment plate on its interior and a movable abutment plate in opposed" relation, a bolt having a left-hand thread rigidly mounted on said movable plate and projecting outwardly through the ring, a loop member integral with the ring and on the exterior side thereof, said bolt extending through the loop member, and a nut member mounted onsaid bolt, located within the loop memberand adapted to effect the inward and outward movement of the movable abutment plate. i

'THERON L. 

